Internal motor cleaner



Jul 15, 1941. w. R; SMITH 2,249,303 INTERNAL MOTOR CLEANER Filed July 5, 1940 3 sheets sheetl IN V EN TOR.

A TTORNEYS;

July 15, 1941. w. R SMITH INTERNAL MOTOR CLEANER I Filed July 5, 1940 3 Sheets-Sheet 2 W RTY m 5%" I INVENTOR.

ATTORNEYS.

July 15, 1941.

w.R. SMITH 2;249,303

INTERNAL MOTOR CLEANER Filed July 5, 1940 .3 Sheets-Sheet '3 ZNVENTOR.

ATTORNEYS.

Patented July 15, 1941 UNITED STATES PATENT OFFICE INTERNAL MOTOR CLEANER William R. Smith, Medicine Park, Okla.

Application July 5, 1940, Serial No. 344,167

1 Claim.

This invention aims to provide novel means for cleaning the parts of an internal combustion engine which are disposed within the crankcase.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, Without departing from the spirit of the invention.

In the accompanying drawings:

Fig. 1 shows in elevation, a device constructed in accordance with the invention, parts being in section;

Fig. 2 is an elevation wherein the structure is viewed at right angles to the showing of Fig. 1;

Fig. 3 is a transverse section on the line 33 of Fig. 2; I

Fig. 4 is a sectional view illustrating the nozdle structure and attendant parts;

Fig. 5 is a top plan showing the pressure gauge and parts adjacent thereto;

Fig. 6 is a sectional view illustrating the hookup when it is desired to drain the crankcase.

In carrying out the invention, there is provided a receptacle I for surplus cleaning fluid. On the bottom of the receptacle l is mounted, detachably and removably, a receiver 2 constituting a base for parts carried by it and hereinafter described. The receptacle I and the receiver 2 may be heated, if desired, by any suitable means indicated at 3 and forming no part of the present invention.

A vertical standard 4 is secured to the receiver 2 and is provided, near its lower end, with a transverse bracket 5 to which a depending gear pump 6 is attached, the gear pump being spaced from the bottom of the receiver 2. The vertical shaft of the gear pump 6 is marked by the numeral 1. The shaft 1 is journaled for rotation in vertically spaced bearing arms 8, projecting inwardly from the standard 4.

The standard 4 is provided at its upper end and slightly below its upper end with transverse rai1s 9, secured to the base pieces ll] of an electric motor II, the shaft of the motor being vertically disposed, and being connected to the shaft 1 of the pump 6 by a coupling l2. The bearings 8 carry the shaft 1. y The lower end of a discharge conduit I4 is connected to the pump 6, the discharge conduit extending upwardly and laterally. By means of a coupling l5, the upper end of the discharge conduit I4 is connected to a hand valve IS. The hand valve I6 is connected to a plug I'I, carrying a screen l8.

The crankcase of an internal combustion engine is marked by the numeral l9. The ordinary drain plug (not shown) of thecrankcase is removed, and in its place, the plug I1 is threaded into the crankcase.

A hand valve 20 is interposed in the discharge conduit I4. The hand valve 20 is joined by a connection 2| to a pressure gauge 22 carried by the motor ll.

A depending by-pass pipe 23 is connected to the valve 20 and extends downwardly into the receiver 2.

The motor ll drives the pump shaft I, the pump 6 is operated, the pump takes cleaning fluid from the receiver 2, and the cleaning fluid is discharged through the conduit 14 and through the screen l8 into the crankcase l9, parts within the crankcase being cleaned by spray proceeding through the screen. The flow through the screen I8 is under the control of the hand valve IS.

The gauge 22, being connected to the discharge conduit l4 by way of the valve 20, shows the pressure that has been attained in the conduit l4. The pressure in the conduit I4 may be regulated by so manipulating the valve 20 that some of the cleaning liquid will by-pass through the pipe 23, into the receiver 2.

The receptacle l serves to hold cleaning fluid that may spill out of the receiver 2. Moreover, if desired, the cleaning fluid may be disposed at any desired height, within the receptacle l, the

receiver 2, of course, being kept full also.

The plug Il may be detached from the crankcase l9, so that cleaning fluid can drain out of the crankcase. The coupling l5 may be disassociated from the hand valve l6. Then, as shown in Fig. 6, the coupling I5 may be assembled with a nipple 24, which, in its turn, is joined to any desired part 25 of the pressure gauge line on the motor. In this way, the cleaning fluid will be discharged back through the main bearings of the crankshaft, the connectingrods, the piston pins and the cylinder wall, the drainage taking place through the part of the crankcase shown in Fig. 4, it being recalled that the plug ll of that figure has been removed.

I Having thus described the invention, what is claimed is:

A cleaner for internal combustion engines and the like, comprising a receptacle affording a substantial supporting base, a motor disposed above the base, a standard retaining the motor in centralized relation to the base and having its lower end secured to the receptacle, a pump, a shaft connection between the motor and the pump,

and outlet means for the pump: the cleaner being 10 

